So I tried it tonight with my Marshall JVM. It is a Tone Bender clone, sort of. I have never used a Tone Bender, so I wasn't sure what to expect.
This is a fun pedal. It gets you into Beatles' Revolution style fuzz, but that kill switch is clever. It makes the pedal almost into an octave fuzz, but not with an octave added - just that stuttering, zipping sound. The Fuzz Factory is great for that too.
I tried with a clean amp tone and a distorted amp tone. Sounds way better with a distorted amp. Really cool fuzzy tone. Can be a bit bright but it's fun to mix with other pedals. It uses Germanium transistors, and you never know what's gonna happen when you add another gain pedal before, or after this one.
Demo will come, but for now, I can say I am impressed and curious. I'm not sure how to use this pedal best, but I am sure I will find some fun ways to add it to my sound palette.